Long range setting for pixhawk

I’m trying to find a long range solution for pixhawk and I’m realizing that it’s harder than it looks!
The problem is that using a FPV setting you need to use 3 radios (EzUHF, RFD900, Video Tx, for example?)

It is extremely difficult to make that three radio systems operating at the same time, my idea is that at least the telemetry and the PPM would mix in one device (RFD900 would be a nice solution but it is not implemented yet).

I would like to ask about make this system with a good performance existent data link

freewave.com/products/productfamily/MM2.aspx
microhardcorp.com/IPnDDL.php
avalonrf.com/products/digita … -links.php

I attach a drawing of this scheme:

  • It seems mavlink can not go through standard (3v3) serial port, is it?
    I have read than it need than radio inject any kind of information about quality of link?

  • and, Can pixhawk receive controls (rc channels) through telemetry port? in order to not use any adapter onboard and connect datalink directly to pixhawk.

Thanks!!!